Most Devs are not Designers though and they do not give enough consideration to the users that they want to use their app. Building a UI that includes everything, that everyone is going to love, is not possible.

As soon as ANY kind of ad/advertising gets introduced into a website or app for product shopping, services, or "checkout isle" impulse purchases etc, will always result in censorship.

If the Dev expects to have a profitable app in the end that will never need ads, then he/she needs to utilize the chain that it's built on and NOT introduce those third-parties.